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Premature Partial Closure of the Triradiate Cartilage Treated with Excision of a Physeal Osseous Bar. Case Report with a Fourteen-Year Follow-Up*
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Investigation performed at the Mayo Clinic, Rochester
J Bone Joint Surg Am, 1997 May 01;79(5):767-70
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Traumatic disruption of the acetabular triradiate cartilage is an infrequent injury. When it occurs in young children, it may lead to premature physeal closure, even with little or no displacement of the innominate bones at the time of injury. Premature physeal closure results in a physeal osseous bar and progressive thickening of the wall of the acetabulum. This causes the acetabular cavity to become more shallow, resulting in gradual extrusion of the femoral head, subluxation, and eventually, hemipelvic hypoplasia and dysplasia of the hip1,2,10,13. Acetabular reconstruction is sometimes used to correct these abnormalities. Variable irregularities of growth at the proximal end of the femur, such as flattening of the medial side of the femoral capital epiphysis and coxa valga, also may occur.
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